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Bearing solutions for large horizontal forces

 Bearing solutions for large horizontal forces
Auteur(s): , ,
Présenté pendant IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014, publié dans , pp. 2470-2477
DOI: 10.2749/222137814814069200
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There are two main general bearing arrangements that are applied where transverse horizontal loads on a bridge deck must be resisted, which are discussed in this paper: a guided-sliding and a free...
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Auteur(s):


Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014
Publié dans:
Page(s): 2470-2477 Nombre total de pages (du PDF): 8
Page(s): 2470-2477
Nombre total de pages (du PDF): 8
Année: 2014
DOI: 10.2749/222137814814069200
Abstrait:

There are two main general bearing arrangements that are applied where transverse horizontal loads on a bridge deck must be resisted, which are discussed in this paper: a guided-sliding and a free- sliding bearing, paired up on one axis (the standard bearing setup for bridges); and a pair of free- sliding bearings designed for vertical loads, and a second pair of free-sliding bearings designed for horizontal loads on a so-called shear key (or wind shoe), or directly on a pylon. Their respective applicabilities, advantages, and limitations are discussed, with special emphasis on cable-supported bridges. For a shear key setup, restraint becomes a central design issue, affecting the installation, exchange and life-cycle cost of the bearings. Causes of restraint loads on such bearings, and solutions such as preloading systems, are discussed. Two case studies, from current major projects, are presented.

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